Journal
NANO LETTERS
Volume 14, Issue 5, Pages 2741-2746Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl500712u
Keywords
Graphene; optoelectronics; photodetection; nanophotonics; photonic integration
Categories
Funding
- Young Investigator Program (YIP) of AFOSR [FA9550-12-1-0338]
- NSF
- NRI under NSF [ECCS-1124831]
- NSF through NNIN program
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1124831] Funding Source: National Science Foundation
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Graphene's unique optoelectronic properties have been exploited for many photonic applications. Here, we demonstrate a single graphene-based device that simultaneously provides efficient optical modulation and photodetection. The graphene device is integrated on a silicon waveguide and is tunable with a graphene gate to achieve a near-infrared photodetection responsivity of 57 mA/W and modulation depth of 64% with GHz bandwidth. Simultaneous modulation of photocurrent and optical transmission has been achieved, which may lead to unprecedented optoelectronic applications.
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